Combined typewriting and computing machine



H. L. PITMAN.

COMBINED TYPEWRITIN G AND COMPUTING MACHINE.

APPLICATION FILED MAYI5.1919.

1,417,685. tented May 30, 1922.4

4 SHEETS-SHEET 1.

l NVENTOR= H. L. PITMAN.

COMBINED TYPEINHITING AND COMPUTING MACHINE.

APPLICATION FILI-ID MAYIS, I919- Patented May 30, 1922,-

4 SHEETS-SHEET 2- INVENTOR dy $51M,

|NVENTOR= ATTO H. L. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILE D MAY 15. 1919 H. L. PITMAN. COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED MAY15,I919.

Patented May 30, 1922,

4 SHEETS-SHEEY 4.

INVENTOR= ATTOR Y.

UNITED STATES PATENT OFFICE.

HENRY L. rrrmm, or ELIZABETH, NEW masnm'assxcnok TO unnnawoon comrorme MACHINE com any, on NEW YORK, N. Y., A conrona'rrou or NEW YORK.

Application file (1 May15,

This invention relates tocombined type.

writing and computing machines, and is herein shown as applied tothe kind shown filed August ,14, 191-7, (now Patent No. 1,345,460, dated July 6,1920) in which a column-computer unit and a cross-computer unit are used; each unit comprising two elements, namely, a totalizer and a master wheel or actuator, one of said elements traveling relatively to the other. In this kind of machine, there is alsoprovided a computer carriage or sub-carriage upon which the traveling element of the cross-computer unit may be supported, so that it may'trave'l intermittently with the typewriter carriage. v

'The invention may be used in connection with parts disclosed in my co-pending application, No. 282,277, filed March 13, 1919, in which the computation is performed by means actuable' by a motordrive; the motor-drive being renderable active by a motor-release under the control of numeral type keys; and the motor-release having a connection extending therefrom, to render effective a locking device for the escapement mechanism of the typewriter carriage.

An object of the present invention is to render the numeral keys ineffective when p the typewriter carriage reaches the punctuat-ion positions between the various groups in a column of numbers, whlle the carriage is passing through a computing zone. This may be done by locking the connection ex--.

tending from the motor-release, when the typewriter carriage reaches the punctuation position, thus locking the numeral keys against actuation.

This locking of the keys may be accomplished by means on the typewriter carriage or means on the sub-carriage. The columntotalizers, of which there may be one or more arranged to travel with the typewriter carriage, may be adjusted to positions which correspond to variouscolumns on a works pecification of Letters Patent.

TYPEWRITING AND COMPUTING MACHINE.

Patented May 30, 1922.

1919. Serial No. 297,274.

' sheet, which may be carried by the typewriter carriage. Each column-totalizer is provided with a series of cams or tappets at punctuation positions thereof, which, as the carriage passes through a computingzone, engage with a cam on a lever to swing it about its pivot to actuate a rock-shaft through the medium of an arm on said rockshaft; the latterhaving connected thereto means which extends to the back of the machine where it is connected to actuate a lockmg pawl to bring it into locking relation with a hnk of the connection extending from the motor-release, to lock the numeral keys.

It is sometimes desired, when typing numbers in a column, to run the numbers into the cross-totalizer only. In such a case the columnar position of the carriage is not provided with a column-totalizer. It is further desirable, however, to lock the keys when the punctuation positions in a such a column are reached. To do this, the cross-computer carriage is provided with a series-of tappets, which engage with an arm, extending from the rock shaft, having the key-locking means, connected thereto, so that the latter may be actuated in the various punctuation positions, as the cross-totalizer passes through the computing zone with the typewriter carriage.

The invention may also be used with mechanism shown in my co pending application,

'No. 212,213, filed January 17, 1918 (now said application to lock the numeral keys in case the operative backs the typewriter carriage into the computing zone without the aid of the back-spacer key, thus compelling the operative to actuate the back-spacer key,

to assure the reconnection of the cross-computer carriage and the repositioning of the cross-totalizer relatively to its actuator, before the actuation of a numeral key.

In the present invention, means is provided to lock the numeral keys when the carriage is backed into a computing zone, as

above described. For this purpose, I have found it advantageous to utilize part of the above-described locking mechanism, including the pawl which engages with the link extending from the release for the powerdrive.

In the present invention, the releasing means for the power-drive includes a universal element or bar with which all of the "numeral keys may be associated; the uni- I versal bar being so arranged that a slight depression of an may actuate sai the power-drive.

one of the numeral keys universal bar and release Just prior to the release of the power-drive, the actuated key beneous depression of two numeral keys, and

consequently prevent the possibility of two keys being actuated by the motor-drive at the same time. For this purpose, there is provided key-locking means which may be like that disclosed in my co-pending applilator ke l5 fi cation, No. 181,460, filed July 19, 1917 (now Patent No. 1,349,386, dated August 10, 1920'). Each numeral key is provided with a pendant having an intruding wedge there on, which may enter between two pivoted pawls. Each wedgeis provided withv two pawls, all of the pawls forming a group supported between two studs with sufficient play between the studs to permit the intrusion of only one cam at a time. v

Provision is further made to prevent the release of the typewriter carriage by a tabuwhile a computing action is taking place, t e effect of which would not only cause an incorrect result in the totalizer, but

' would also cause a collision between co-opcrating parts of the computing mechanism. To do this, there is provided an intruding member which is actuable by any one of the tabulator keys to engage between two of the pawls of'the group associated with the intruding cams of the numeral keys. If a numeral key is active, the intruding member cannot enter between the pawls, consequently locking the tabulator keys against actuation, and preventing the release of the carriage. With this key-locking means, it is also impossible to actuate a numeral key to release the power drive and actuate the computingme'c'hanism while a tabulator key is active.

The computing mechanism may be rendered ineffective by a non-compute key' connected to render the motor-release ineffective. This may be done without having any effect on the means which locks the numeral keys at punctuation positionsof the car riage, and which is also associated with the motor-release. 1

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a side elevation of the machine as viewed from the right-hand side, certain parts being broken away and parts being omitted for the sake of clearness.

Figure 2 is a skeleton perspective view of the machine as seen from the upper lefthand corner, and shows the numeral keylocking mechanism which may be rendered efiective by either the column-totalizers or the cross-totalizer, one of the column-totalizers and the cross-totalizer being shown as passing through the computing zone with the typewriter carriage. Figure 3 is a perspective view of some of the numeralkey-locking means for preventing the simultaneous actuation of two keys.

Figure 4 is a diagrammatic perspective view as seen from the upper right-hand corner, showing the release for the power-drive and the key-lock associated therewith.

Figure 5 is a sectional view showing the valuating and actuating mechanism, the parts being shown in normal positions.

-- Figure 6 is a perspective view of the means for rendering the key-locking mechanism effective when the typewriter carriage is backed into the computing zone without the aid of the back-spacer key.

Figure 7 is a detail view of the key-locking mechanism, and shows the same rendered effective by one of the totalizers.

Figure 8 is a similar view, but shows the 1 key-lockingv mechanism rendered effective by the mechanism shown in Figure 6.

Numeral type keys 10 and alphabet type keys 11 swing key levers 12' about their fulcrum 13 against the tension of return springs 14 to rock bell-cranks 15 about their common fulcrum 16; theupper ends of said bell-cranks 15 being effective to swing type bars 17 upwardly. and rearwardly about their fulcrum 18 to cause types 19, adapted to strike the platen at a common printing point, to print against a work-sheet (not shown), which may be carried by a cylindrical platen 2O rotatable in a platen frame 21 supported on a carriage22 which ma travel back and forth on a front rail 23 ant a rear rail 24. The carriage 22 is constantly urged from right to left of the machine by means of a sprlng drum 25 connected thereto strap 26. The carriage 22 is permitted to .move in this direction, during typing operations of the. type bars 17, by means ofescapement devices including a universal bar 27 forming part of a floating frame. 28, which is moved rearwardly during the latter part of the upward strokes of the type bars by heels 30 which engage the universal bar 27. The frame 28 is guided and carried at its rearend by a pivoted frame 31 comprising a rock shaft 32. The floating frame as therein a cross-bar '33 which engages with a dog rocker 34 to swing the upper end comprising the universal bar 27, which 1sv caused by the usual return spring 41, the

loose dog enters the space between the previously-engaged tooth and the, next tooth, and the escapement wheel becomes released fromthe fixed dog 38, which is"rotate d by means of the spring drum through the medi umof a pivoted feed-rack 42 on the typewriter carriage, which rotates a pinion 43 having the usual one-way connection (not shown) with the escapement wheel'37. Duringthis movement, the next tooth of the escapement wheel engages the loose dog 36 to swing it about its pivot 40 until it is finally arrested by a fixed stop'44-at the upper end of the dog rocker, the carriage having thus been moved through one letter-space dis 'tance.

' The computing mechanism may comprise a column-computing unit 45, having an actuator 46 carried by the main frame 47, and one or more column-totalizers 48 adjustably mounted (at positions corresponding to the.

motor having a spring 58, which is connected to drive a gear wheel 60 meshing with a pinion 61 secured to said power shaft 57. The spring 58 may be wound automatically or, in other words, energy may be stored therein by means of an electric motor 59. The power shaft 57 is'normally held by a pawl 62, which engages with a dog 63, connected with the power shaft 57. The powershaft 57 is provided with valua'ting cams 64 (Figure 5), one for each numeral key from 1 to 9, inclusive, which'vary insize according to the values of the associated numeral keys. There is also provided a series of arms or interponents 65, one for each valuating cam, the interponents-being normally out of co-operating relation with the cams, and slidingly mounted on a valuating shaft 66, so that they dividually and selectlvely into co-operative relation with, their associated valuating cams:

columns on the work sheet) on atbar 50. The

'bar is arranged to travelon a fixed guide.

rail 51, and with the typewriter carriage,

connection being had between the typewriter carriage and the bar 50 bvone or more arms 52. .Each totali zer may comprise a plurality of dial wheels 53 arranged in denominational order, side by side, and meshing with intermediate computing wheels 54, the latter being brought seriatim' into effective relation with a master wheel 55, secured to a shaft 56 rotatably mounted in the actuator 46, during the letter-feeding movements of the typewriter carriage.

The master wheel 55 is herein shown as actu'able by power-driven mechanism which may be located in backof the main frame 47' and under the control of the numeral ke s.

The power-driven mechanism may be like that disclosed in mysaid co-pending application No. 282,277, andcomprises a power shaft 57, which may be rotated by a springand run in the value of the actuated numeral- When a numeral key 10 isactuated, the

may be brought in-' associated key lever 12 swings also a bell;

crank 67 about a fulcrum rod 68, to push a link 70 rearwardly; said link 7 0 may be connected as shown in my said co-pendingapplication No. 282,277, but is herein shown' connected directly to a three-armed member 71,- to actuate the latter, which is pivotally 73 for the power driven mechanism (Figures 1 and 5); It will" be understood that there is one three-armed member for each numeral key, and that each one'is provided with a pin 74 to engage with one of a series of forked members 75, secured to a shaft 76; the forked members and the shaft 76 forming a universal bar which may be rocked by a slight depression of any numeral key to release the'power shaft 57. The motor-release shaft 76 has secured near its right-hand end a bell-crank member 77,

which haspivotally connected thereto an actuating member 78 having a tooth 8O thereon, to engage with a tooth 81 on the holding pawl 62, to swing the latter out of effective relation with the dog 63 on the 1 power shaft 57 and thus release the latter so that 1t may be rotated by the spring motor key to the totalizer 48 me mannerpresently to be described. After. the power shafthas been released in this manner, a tail 82 on the holding dog 62 engages with said actuatlng member 78qto move the tooth 80 out of engagement with the tooth 81 on pawl 62, so that said pawl may be returned to its normal position by a spring 83, to be ready to arrest the power shaft 57, at the completion of a revolutionthereof. Provision may also be made of a cam on shaft 57 to engage pawl 62 and insure its return to effective position.

The power shaft 57, after its release,'is 1 30 95 mounted on a rod 72 supported in-a casing effective to actuate the universal bar comprising the shaft 76 and the forked members'375, and thereby drive the actuated type-bar. For this purpose, there is provided a cam 84 secured to the power shaft 57, and engaging -.with a roller 85 on the bellcrank 77 secured to said motor-release shaft 7 6. At the instant of'release of the power- 76, the forked member engages to actuate the The three-armed being adapted to mesh witheither one of the pinions 113 and 114 for addition and subtraction; said pinions forming part of a state-setting mechanism which. may be being effective to rock a bell-crank 116 about a rod 117 upon which it is pivotally movements of the parts are so timed, that after the roller 93 has been moved over the valuating cam 64, the cam portion of the latter then engages with said roller to swing the interponent 65. A finger 94 in said interponentcngages with a standard 95 on the valuating shaft 66, to rock the latter until it isarrested by a stop 96on the cam slide, with which 'a projection 97 on the standard 95 engages;- the stop 96 having .previously been lowered into the path of said projection 97. It should be understoodthat there is one interponent 65 for each numeral key, and that the valuating shaft 66 may be rocked through different angular distances corresponding to the values of th numeral keys 10.

The various angular movements of the valuating shaft 66 may be transferred to the master wheel by mechanism including a downwardly-projecting arm 98 secured near the right-hand side of the valuating shaft 66. The arm is adapted to draw a link 100 rearwardly, to rock a bell-crank 101 about a fulcrum rod 102 upon which it is pivotally supported. The bell-crank 101 when rocked, pulls downwardly on a link 103, which is connected to an arm 104, (Figures 1 and 4), fixed on a shaft 105 and rocks the latter. The shaft 105 extends into the actuator 46, and has secured thereto at its inner end, a downwardly-extending arm 106 (Figure 4), which is effective to move a driving rack 107 forwardly by means of a link 108; the driving rack having previously been moved into effective meshing relation with a pinion 110 by means hereinafter described. The pinion 110 is ri idly secured to a shaft 111, which has also a arge gear wheel 112 secured thereto; the latter mounted, to pull rearwardly a link 118 connected to said bell-crank. The link 118 rocks a bell-crank 120 about the fulcrum rod 102, to pull downwardly, a link 122 connectedto an arm 123 extending from a shaft 124 to rock the latter in a clockwise direction. The shaft 124, has secured thereto a down ward'ly-extending arm 125, to which is connected a link 126, to rock a shaft 127 in a counter-clockwise direction by means of an arm 128 extending from said shaft. The shaft 127 has thereon a cam engaging with a forked arm 130 to rock a shaft-131, to which said forked arm'130 is secured, in a clockwise direction. -The' rockl shaft 131 extends into the actuator 46, and has secured thereon, at its inner end, a bell-crank 132, to raise the driving rack 107, which is partly supported on said bell-crank bya headed stud 133, which engages in a slot 134 of said rack. A similar bell-crank 135 is pivotally mounted. on the shaft 124, and is connected by a link 136 to move with the bellcrank 132 and to guide the rear part of the driving rack 107; said bell-crank being also provided with a stud 137 engaging in a slot 138 to support the rear part of the rack. After the driving rack 107 has been raised into engagement with the associated pinion 110, the valuating shaft 66 is actuated to transfer the number to the dial wheel, as hereinbefore described.

After the number has been run into the totalizer, the drivin rack 107 is lowered out of engagement with the pinion 110 prior to its return to normal position. For this purpose there is provided a rack-lowering cam 140 secured to the power-shaft 57, which engages with the bell-crank 116 to swing it in a counter-clockwise direction, to restore the connected parts, including the bellcranks 132, 135, to their normal positions, thus disengaging the driving rack 107.

The driving rack 107, after it is disengaged from the pinion 110, may be restored to its normal position by means of a spring 141 coiled around the valuating shaft 66;

one end 016 the spring being secured to said shaft 66, and the other end being connected to an arm 142 pivotally mounted on said valuating shaft. There is also'a cam 143 secured to the power shaft 57, which may assist in returning the rack to its normal position. The cam 143 --is adapted to swing the arm 142 in a clockwise direcapplication No. 282,277, and may include a locking pawl 146 pivoted at 147, on the casing 73. The locking pawl 146 is normally held in an ineffective position against the tension of aspring 148 by means of a pivoted controlling member 150, connected by a link 151, to the bell-crank member 77 on the motor-release shaft 76. When the motor-release shaft is actuated, as hereinbefore described, by the depression of a numeral key 10, the link 151 is moved against the tension'of a return spring 149 to swing the controlling member 150 away from the holding pawl, thus permitting the spring 148 to swing the holding pawl 146 in a counterclockwise directionand render it effective. The holding pawl is arrested in its effective position against the periphery of a co-operating member 152. It will be understood that this happens during the early part of the depression of any one of the numeral keys 10. During the latter part of the depression of a numeral key, the heel 30, of the associated type bar 17, engages with the universal bar 27, to move the latter rearwardly to release the loose dog 36, and bring the fixed dog 38 into the path of the teeth of the. escapement wheel 37. The pivoted frame 31 is also actuated at this time, the rock shaft 32 thereof being provided with a downwardly-projecting arm 153, which is swung ina clockwise direction and, by means of a pin-and-slot connection 154, actuates an arm 155, secured to a shaft 156, to rock the latter in a counter-clockwise direction. The rock-shaft 156 has secured thereto, near its right-hand end, an upwardly-projecting arm 157, which pulls a 'link 158 forwardly to swing the co-operat; ing member 152 about its pivot 160, thus permitting the locking pawl 146 to drop into a notch 161, formed in the co-operating member 152, thereby locking said co-operating member and the connected parts, including the dog rocker 34, in their actuated positions to hold the carriage against movement. The parts are so timed that the cooperating member 152 becomes releasedfrom dition, the tooth 80 on the actuating memvantageous to lock the link 151 which renders the locking pawl 146 effective and which is the'holding pawl 146, by the controlling member 150, after the parts have returned to a position from which the power shaft 57 may again be released by another actuation of the numeral key 10. To insure this conher 78 moves into effective relation with 1 the tooth 81 on the holding pawl 62, immediately prior to the withdrawal of the locking pawl 146, from the notch 161, by the return movement of the controlling member 150, or, in other words, immediately prior to the releasing of the locking pawl 146.

Provision is made to insure spaces for punctuation between the groups of numbers, which spaces may be left blank, or in which suitable punctuation marks may be typed.- Further provision is made to prevent the typing of numbers in these punctuation spaces or positions. -To accomplish theforegoing, the numeral keys are rendered inef fective when the punctuation spaces are reached. To do this it has been found adconnected to the motor-release shaft 76. For this purpose there may be used apawl 162, which may engage with said link 151, thereby locking the motor-releasing mechanism, and consequently preventingthe actuation of the numeral keys and the computing mechanism. To cause the pawl 162 to engage with the link 151, each totalizer 48' maybe provided with tappets or cams 163 (Figure 2) at the punctuation positions of the totalizer. After typing the last number of each group, or in other-words, the number preceding a punctuation position, one of the tappets 163' engages with a cam 164, to swing a horizontally-disposed lever 165 about its pivot 166; said horizontally-disposed lever being located at the back of the actuator 46,, and extending. toward the right-hand side thereof, where the free end of'said lever engages 110 with an upwardly-projecting arm L67, se-

cured to a shaft. 168, to rock the latter to- I ward'the back of the machine. The rock shaft 168 is conveniently supported between a .side wall 170 of the actuator 46 and afixed 1 bracket 17 1; An arm 172 secured to the rock shaft 168 moves a link 17 3 rearwardly to swing an arm 174 loosely mounted on a- ,rock shaft 175. The arm 174 (Figures 2 tappets 163, thus holding the point, the cam 164 of the horizontally-disposed actuating lever may rest on one of the awl 162 in its effective locking position and preventing the actuation of the numeral keys 10. If it is desired to leave a blank space between numbers, a space bar 182 (which may be like that used in the Underwood machine) may be actuated to vibrate the dog rocker 34 of the escapement mechanism, to feed the carriage 22 one letter-space distance. The tappet 163 then rides oil the cam 164, and the return spring 181 swings the pawl 162 out of engagement with the link 151, and consequently the numeral keys 10 are unlocked and also the power drive for the computing mechanism. These operations are repeated at each punctuation position. It should be understood that it is preferable to type punctuation marks in the punctuation positions by keys such as the comma key or periodkey; these keys being also effective to actuate the escapement mechanism in the usual way, to feed the carriage and render the numeral keys and the power drive effective. L 1

There is also provided a cross-computing unit 183, comprising an actuator 184, and a cross-totalizer 185 adapted to travel in termittently with the typewriter carriage 22 through a computing zone, in a manner to be presently described, so that, the total, crosswise of the various columns, may also 'be registered, or, in other words, so that cross-computations of numbers written in the various columns may be efiected.

The actuator 184, of the cross-computing unit has rotatively mounted therein a master wheel 186, which may have a connection to the master wheel 55 of the column-computing unit 45 to rotate therewith. This connection'may be like that disclosed in my said co-pending application No. 186,098, comprising the horizontal shaft 111 which, through the medium of bevel gears 187 and 188, is herein illustrated to drive a vertical shaft 191, which, by means of bevel gears 192 and 193, drives a horizontal shaft 194, connected through suitable gearing contained within the actuator 184, to rotate the master wheel 186 of the cross-computing unit. It will be understood that the master wheel 186 may be rotated through various angular distances, and that these rotative movements may be transferred to dial wheels 195, contained within the cross totalizer 185, through the medium of computing wheels 196 adaptedto engage with the master wheel 186 seriatim, as the typewriter carriage passes through a computing zone.

The cross-totalizer 185 may be adjustably mounted on a cross-computer carriage 197 sultably guided for traveling movements in a fixed. rail or guide bar 198, secured to the frame 47 of the machine.

To cause the cross-totalizer to travel intermittently with the typewriter carriage, the cross-computer carriage 197 is picked up to travel with the typewriter carriage and becomes released therefrom each time the typewriter carriage passes into and out of a computing zone, respectively. For this purpose, there may be provided a series of pick-up devices 200, which may be set on a bar 199, carried by the typewriter carriage, 22, and in positions corresponding to the various columns on the work-sheet. When the carriage enters a computing zone, one of the pick-up devices 200 engages with a projection 201 on a pick-up bar 202, which forms part of a train of mechanism extending between the typewriter carriage and the cross-totalizer carriage. The pick-up bar 202 is moved to rock a bell-crank 203 about a fixed pivot 204. The bell-crank 203 is connected, by means of a link 205, to an arm 206, to move the latter and rock a shaft 207 to which said arm is secured. The rock-shaft 207 may be conveniently supported in. any suitable manner, and is provided at its forward end with an upwardlyextendin arm 208, which is rocked with said shaft, and is connected by means of a link 210 to the cross-computer carriage 197 (Figure 1) to move the latter with the type writer carriage. Thus the cross-totalizer moves with the typewriter carriage step by step until the last figure is written in the column, when a pin 211 (Figure 6) on thepick-up bar 202 engages a cam 212 formed on a guide plate 213, to swing the pick-up bar about its point of connection on the bellcrank 203, and disengage the projection or ick-up hook 201 from the pick-up device 00. A return spring 214 connected to the arm 208 then becomes effective to restore the cross-computer carriage 197 with the cross-totalizer 185 and the train of mechanism, between the cross-computer carriage, and the typewriter carriage, to normal position, when the pin 211 on the pick-up bar engages in the end of a slot 215, as shown in Figure 6. The typewriter carriage may then be moved to bring the next column to the computing zone, when the next pick-up device 200 engages the pick-up bar 202 to cause the crosstotalizer 185 to move with the typewriter carriage, as described for the previous column. Thus it will be seen that the cross-totalizer is caused to travel intermittently with the typewriter carriage.

It. should be understood that ordinarily there is a column-totalizer provided for each column on the work-sheet, and that there is a pick-up device for each column-totalizer. It should further be understood, however. that it is sometimes desired to run the figures, beingtyped in a column, into the cross-totalizer Without running them into a column-totalizer. In such a column there is through a computing zone the numeral keys no'need of a jcolumn-totalizer, but a pickup device is provided to cause the crosstotalizer to move with the typewriter carria e in that column.

rdinarily, when" the cross-totalizer passes are rendered ineffectlve when a punctuation position is reached, andthis is done by the column-totalizer (as hereinbefore described), which passes throu h the computing zone at the same time. hen a column is reached at which there is no column-totalizer, and

carriage 197, so that the tappets may engage with a horizontally-disposed arm 218 on the rock shaft 168 to rockthe latter as the cross-totalizer passes through the comput zone; to render the locking pawl 162 e ectivethrou h the connections comprising the link 173 and arm 172 on the rock shaft, andlock the numeral keys, as hereinbefor'e described. Y

The cross-totalizer 185 may be adjusted on the cross-computer carriage 197 and may be located relatively to the tappets 216, by

. means of a scale mark 220 on the plate 217,

and a pointer 221 on the cross-totalizer 185.

a The 'cross-totalizer may be secured in place after adjustment by any suitable means,

" which may be controlled by a finger piece 222 on said'totalizer.

By an inspection of Figure 2, 1t will be seen that the cross-computer unit 183 is located to the right and below the columna computing unit 45; andthat the rock shaft 168 with the two actuatin arms 167 and 21s thereon, and the arm 1 72 to which the link 173 is connected, makes a very simple and efficient arrangement, whereby the nu- -meral keysmay be rendered ineffective. by

either the column-totalizers 48 or the crosstotalizer 185'at punctuation osition.

A back-spacer is provide for the typewriter carriage 22 which may be like that described in the patent to Helmond No, 930,962, dated Au ust 10, 1909, and comprises a key 223- FFigure. 2).,which, when depressed, swin a key-lever 224, to rock a shaft 225 and a forwardly-projecting arm 226 thereon, to pull downwardlyia link 227 against a suitable' -return spring228. The

link 227 swings a back-spacer pawl 230 into engagement with the teeth 231 of the, feed rack 42; the back-spacer pawl 230 being mounted on an arm 232, which is swung about its pivot 233 until the upper end of the arm 232 1s arrested against the feed rack.

During this movement, the pawl 230 and the arm 232 swing as an integral part, After the arm has been arrested by the feed rack, a continued movement of the link 227 causes the pawl 230 to swing about its pivot 234, and against the tension of a return spring 235, thus drawing the carriage 22 back from left to right, or in other words, back-spacing the carriage through one letter-space distance. I

Means is provided to re-co'nnect the cross computer carriage with the typewriter carriage, when the latter is backed into a computing zone by means of the back spacer key. This means may be like that disclosed in'my co-pending application 212,213, filed January 17, 1918. For this purpose, the lever 224, when actuated by the depression arm 237, to rock a shaft 238; the latter having an arm 240 which moves a thrustbar 241 rightWa-rdly, (Figure 2), so that an engaging portion 242 thereon may engage with :a pin 243 on a bell-crank 244, to rock the latter about a fixed pivot 245 and ,pull' on a link 246 connected to the arm 208 of the rock shaft 207. The shaft 207 is thus rocked in a counterclockwise direction, to move the pick-up bar 202 leftwardly through the medium of the arm 206, link 205 and bell-crank 203, until the pick-up hook re-engages the previously engaged pick-up device 200. At the same time the cross-totalizer 185 is brought into proper relation with the mas- 'ter wheel 186, by means of the link 210 connected to the arm 208.

When the typewriter carriage is out of the computing zone, the thrust bar 241 is ineffective to actuate the bell-crank 244, the thrust bar occupying such a position that the engaging portion 242 moves idly over the pin 243 on the bell-crank 244. M 15 bar 241-effective when the carria e is moved back into a computing zone.

echanism provided, however, to render thethrust his mechanism may include a shoe 247 (Figures 2 and 6), which is engaged by thenear'est pick-up, device 200, .to swing a lever 248 about its fixedpivot 250 when-the carriage is moved back into a computing zone. The lever 248 has pivotally mounted thereon at 251 an intermediate lever 252 which engagesunder bent-off portion 253 (Figure 6) of the pickup bar 202. As the-lever 248 is swung about its pivot 250, the intermediatelever252 swings about the bent-.ofi' portion 253 as a fulcrum, to pull upwardly on a link 254, and through a yielding connection, comprising a spring 255, swing a lever 256 about its fulcrum 257, to cause the forward end thereof, which projects into a slot 258 of thrust bar 241, to lower the thrustbar and br ng the engaging portion 242 into co-operative relation with the pin 243-0n the bell-crank 244. A lip 260 (Figure 2) on the pick-up bar 202 may engage in a slot 261 of the bracket or guide plate 213, to prevent lifting of the pick-up bar 202 while the intermediate lever 252 is being actuated. If the back-space key is now actuated, the thrust bar will actuate the bell-crank 244 to reconnect the cross-computer carriage by means of the pick-up bar, as previously described. The bent-oil portion 253 on the pick-up bar, during the re-connecting movement of the latter, moves out of engagement with the intermediate lever 252, but before this takes place, a lip 262 on the thrust bar engages under a fixed pin 263 to retain the effective relation between the engaging portion of the thrust bar and the pin 243 on the bell.-

" crank 244.

Provision is made to render the numeral keys 10 inefiective by locking them and also the motor-releaseagainst actuation when the typewriter carriage is backed into a computing zone, without the aid of the back-spacer key, so as to avoid typing of numbers and computing the same, until the back-spacer key has been actuated to re-connect the crosscomputer carriage and re-position it rela-' tively to the typewriter carriage. To do this, the lever 256 is provided with a pin 264, engaging with .an arm 265 on the shaft 175, to rock the latter and swing the pawl 162 into effective holding relation with the link 151, thus locking the motor-release shaft 7 6, and consequently rendering the numeral keys and the computing mechanism ineffective. It will be understood that when the locking of the keys takes place, the thrust bar 241, connected with the back-spacer key, is also lowered to its efi'ective position.

To release the pawl 162 and thus unlock the numeral keys and the motor-release, the back-spacer key 223. is actuated to re-connect the cross-computer carriage 197 with the typewriter carriage 22, as previously described, during which time the thrust bar is-held in its effective relation with the pin 243 on the bell-crank 244 by means of the pin 263, and consequently the pawl 162 is held'iii its locking position after the bent-ofl portion 253 of the pick-up bar moves away from the intermediate lever 252. As soon as thelip or bent-oil portion 262 is disengaged from the pin 263 on the return stroke of the thrust bar 241, a spring 266, connected to the intermediate lever 252 (Figure 6), restores the link 254 and the thrust-bar-controlling lever 256 to their normal positions, at which time the rear end of the lever 256 is lowered with the pin 264 and permits the spring 181 to rock the shaft 175, to withdraw the pawl 162 from efi'ective relation with the link 151, and consequently unlock the motor-release, so that the computing mechanism and the numeral keys may be actuated. q

' jamming of the type-bars near the printing point. This means also prevents the actuation of another key, before a previously actuated key returns sufiicien'tly to become disconnected from the universal bar under the control of the power drive. To accomplish the above, each numeral key 10 is provided with a pendant 267 (Figures 1 and 3), and each pendant has a wedge 268 thereon, which, when the numeral key is actuated, is forced between two depending pawls 270. These pawls are arranged in pairs which form a series or group, which are pivotally mounted at 271 (Figure 3) on a plate 272, and are located between two studs 273 and 274 at the ends of the group of pawls. group of pawls to permit the intrusion of a single wedge at a time, so that when one numeral key is active, the other numeral keys are locked against actuation, as the pawls are jammed tight together and prevent the intrusion of the wedges 268.

To rapidly position the typewriter car-- riage denominationally in any one of the various columns,'there is provided adecimal tabulator which may. be like that used in the Underwood addendagraph. The tabu lator comprises tabulator keys 275, which, when depressed, swing key levers 276 about their fulcrum 277, to raise plungers 278 against the tension of return sprin 280, to project denominationalstops 281 at the upper ends of said plungers 278, into the path of column stops 282; The column stops 282, as herein shown, are of the usual key-set type and are settable in columnar positions on a stop bar 283 secured to the typewriter carriage -22. When any one of the plungers 278 is raised, it engages with a universal bar 284, to rock a shaft 285, and pull downwardly on a link; 286, to swing a lever 287 about its pivot 288, and raise the carriage feedrack 42 out of mesh with the pinion 43, thus releasing the carriage 22 and permitting it to be drawn left-c wardly by the spring drum 25 until it is arrested, in the selected position, by the column stop 282 which strikes the actuated denominational stop 281.

It is desirable to prevent the release of the power-drive or the actuation of the numeral keys during a tabulating operat1on, or, in other words, while a tabulating key is. in its actuated position. For this purpose there is provided a universal bar 290, which overlies the tabulator key levers 276 at their rear ends, so that it may be actuated by any one of the tabulator key levers. The universal bar forms part of a lever 291, which, when actuated, swings Sufficient space is left in the.

- the space -between the two studs 273 and 274 and leaving no space for the intrusion ofthe wedges on the numeral keys, thus locking the numeralkeys against actuation, and consequently preventing the release of the power-drive, which, it will be remembered, is under the control of the numeral keys. I

From the foregoing it will be understood that the key-locking means including the pawls 270 is common to both the' numeral keys and the tabulator keys, and that any one of the keys in either set is locked against actuation when a key of the other set is active. Asa result of this, thepower-drivecannot be released, and consequently a comutation cannOt take place when a tabulator ey is active, thus insuring that thecarriage is brought to rest and a computing wheel into exact register with the master wheel, after a tabulating operation, and before the computing mechanism can be actuated, to run I the number into the totalizer. v

The platen 20 may beshifted from'lower to upper-case position, so as to enablerprint- 'ing with the upper-case types 295 on the type bars 17. For this purpose, there is provided a case-shift key 296, which, when depressed, swings a lever 297 and anarm 298 thereon about the fulcrum rod 13,- the arm,

being effective to swing a shift frame 300 about its pivot 301. The shift frame comprises a rail or bar 302, which is moved upwardly to shift the platen frame 21 by means of a roller 303 secured to said frame, said roller traveling back and forth on said shift rail 302 duringthe traveling movements of said carriage. The platen may be guided in its case-shifting movements by arms 304 projecting forwardly from a rock shaft 305 on the carriage frame 22.

It is desirable at times to render the computing mechanism ineffective so as to enable the typing of numbers in columns without computing the same. For this purpose, there is provided -,a' non-compute key 306, which may be swung forwardly about a pivot 307, to pull a link 308 connected thereto, and

swing a lever 310 pivotally mounted at 311 on the case-shift frame 300. The lever- 310 is connected at its lower end to a rearwardlyextending link 312, to rock a bell-crank 313, pivotally mounted on the motor release shaft 7 6, in a counter-clockwise direction. The

bell-crank 313 engages with a. pin 314 on the actuating arm 78, to swing the latter about its pivot 315, to take the tooth 80 thereon out of effective relation with the tooth 81 on the holding pawl 62. The bell crank 313 is pivotally mounted on the shaft 76, so that it and the rock shaft 7 6 may be actuated independently of each other. Any suitable form of detent may be used with the key 306 to hold the actuating element 7 8 indefinitely out of action.

actuating arm 78 is out of action, the powerdrive will not be released, and consequently there willbe no computing action. 'It will further be understood that, although there is' no computation performed when a totalizer passes through a computing zone, while the arm 78 is out 'of action, the totalizer still serves to lock the keys and the power-drive when a punctuation position is reached.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I

, claim:

totalizer, a lever to be engaged by said tappets to rock said shaft, and key-locking, means connected with said rock-shaft to prevent writing numbers at a predetermined position in the travel of said totalizer.

3. In a combined typewriting and computing machine, the combination of a carriage, a totalizer to travel with said carriage, numeral keys, a carriage escapement, a horizontallydisposed rock-shaft, tappets on said totalizer, a horizontally disposed pivoted lever to be engaged by said tappets, a vertical arm on said rock-shaft to be engaged by said lever, key-locking means connected with said rock-shaft, and a punctuation type key to actuate said carriage escapement when said numeral keys are locked.

4. In a combined typewriting and computing machine, the combination of a carriage; a totalizer to travel with said carriage; tappets on said totalizer; an actuator for said totalizer; numeral keys; and means to prevent the actuation of said numeral keys at predetermined positions in the travel of said totalizer; said means comprising a horizontally disposed lever pivotally mounted at said actuator, with which said horizontally said means comprising an element actuable by all of said numeral keys, a pawl to cooperate with said element, a spring to normally hold said pawl out of effective relation with said element, and a connection actuable by said carriage to render said pawl effective at predetermined positions in'the travel of said -carr1age.

,6. In a combined typewriting and computing machine, the combination of a carriage, a totalizer to travel intermittently with said carriage, numeral keys, means to prevent the writing of numbers by the numeral keys, and means whereby said preventing means will be rendered effective at predetermined positions in the path of said totalizer as the latter travels relatively to said preventing means. 7. In a combined typewriting and computing. machine, the combination of a main car: riage, a sub-carriage to travel intermittently with said main carriage, numeral keys, a totalizer on said sub-carriage, a device on said sub-carriage, and means actuable by said device to prevent writing numbers at a predetermined position in the travel of said subcarriage.

8. In a combined typewriting and computing machine, the combination of a carriage, a cross-totalizer to travel intermittently with said carriage, numeral keys, a carriage escapement, means to lock said numeral keys,

means for rendering said locking means effective at predetermined positions in the travel of said totalizer relative thereto, and key-operated means to actuate said carriage escapement when said numeral keys are locked.

9. In a combined typewriting and computing machine, the combination of a main carriage, a sub-carriage to travel intermittently with said main carriage, numeral keys, a plurality of cams on said sub-carriage, a totalizer detachably mounted on said sub-carriage and adjustable relatively to said cams, and means actuable by said cams to lock said numeral keys at positions in the'travel of said totalizer corresponding to the positions of said cams.

10. In a combined typewriting and com puting machine, the combination of a main carriage which may carry a work-sheet with one or more columns thereon. and which is adapted to pass through a computing zone, a sub-carriage to .travel ntermittently withsaid main carriage through the computing 'zone, number-printing devices to print at a common printing point, a totalizer onsaid sub-carriage, a plurality of cams on sa d sub-carriage, and means actuable by said cams, when a punctuation position of any one of the columns is brought to the printing point, to lock said printing devices.

, 11. In a combinedtypewriting and computing machine, the combination of a carriage, a column-totalizer to travel with said carriage, a cross-totalizer to travel intermittently with said carriage, numeral keys, and means actuable by either of said totalizers to prevent writing numbers at predetermined positions in the travel of said totalizers.

12. In a combined typewriting and computing machine, the combination of a main carriage, a totalizer on said carriage, a subcarriage to travel intermittently with said main carriage, a totalizer on said sub-can riage, numeral keys, tappets for each totalizer, a rock-shaft actuable by the tappets of either totalizer, and numeral key locking means connected with said rock-shaft.

13. In a combined typewriting and computing machine, the combination of numeral keys; a main carriage; a sub-carriage to travel intermittently with said main carriage; a column-computing unit comprising two elements, namely, an actuator and a totalizer, one of said elements being adapted to travel with said main carriage; a cross-- computing unit comprising two elements, namely, an actuator and a totalizer, one of said elements being adapted to travel with said sub-carriage; numeral keys; a rockshaft extending from the relatively fixed element of one computing unit, to the like element of the othei computing unit; a. de-

vice on the main carriage; an arm on saidshaft; an intermediate member actuable by said device, to rock said shaft; a device on the sub-carriage to rock said shaft; and locking means for said numeral keys connected to said rock-shaft.

.14. In a combined typewriting and computing machine, the combination of numeral keys; a main carriage, a sub-carriage; a

tuator, and a totalizer to travel with said main carriage; a cross-computing unit comprising an actuator, and a totalizer to travel with said sub-carriage;the actuator of said cross-computing unit being located to one side of the other actuator; numeral keys; a horizontally disposed rock-shaft extending from one actuator to the other; a vertically disposed arm on said rock-shaft at the first-mentioned actuator; cams on the firstmentioned totalizer; an intermediate member actuable by said cams; said member engaging with the arm on said rock-shaft to actuate the latter; a. horizontally disposed arm on said rock-shaft; cams for the secondcolumn-computing unit comprising an ac-' mentioned totalizer to engage with said lasti mentioned arm toactuate said rock-shaft; and key-locking means connected to said. rock-shaft.

15. In a combined typewriting and computing machine, the combination of computing mechanism, a totalizer, numeral keys,

actuating mechanism for said computing mechanism under the control of said numeral keys, a universal bar associated with the actuating mechanism, key-locking means associated with said universal bar, and means actuable by said totalizer to render the locking means effective as the totalizer travels relatively to said key-locking means.

16. The combination of a carriage, numeral keys,'computing mechanism, normally held power driving means .for said computin mechanism, releasing means for said driving means, said releasing means being under the control of said keys, and means to' lock said releasin means and thereby said numeral keys against actuation at predetermined positions in the travel of said carriage. A f

17. In a combined type-writing and 'comutin machine the combination of a car- P c 5 a sub-carriage to travel with said main ca-rria e throu h a zone 'rintin devices ineluding keys. normally held driving means associated with said printing devices, releasing means for said driving means, means to release said sub-carriage so that it may resume its normal position when the main carriage passes out of the zone, means associated with the releasing means for said driving means, to render said printing devices inefl'ective when the main carriage is backed into the computing .zone, key actuated means to reconnect the sub-carriage with the main carriage, and means to'render said keys eife'ctive when the sub-carriage is reconnected.

19. In a combined typewriting and computing machine, the combination of a main carriage, computing mechanism, a computer carriage to travel intermittently with said main carriage through a computing zone, numeral keys, normally held driving means for said computing mechanism, releasing means for said driving means, means to re riage is backed into the computing zone,

key-actuated means to reconnect the computer carriage with the main carriage, and means to render said keys effective when the computer carriage is reconnected.

20. In a-combined typewriting and computing machine, the combination of a carriage, computing mechanism, numeral keys, normally held actuating .mechanism for said computing mechanism, under the control of said keys, a carriage escapement, releasing means for said actuating-mechanism, said re-,

riage, computing mechanism, numeral keys,

actuating mechanism for said computing mechanism under the control of said keys,a

carriage escapement, a universal element actuable by said keys, means to lock said escapement' to hold said carriage, means comprising a member connected with said 'uni versal element to render the escapement locking means effective, locking means to cooperate with said member, and means actuable by said carriage to render said lastmentioned locking means effective.

22. In acombined typewriting and com- 'puting machine, the combination of a carriage, computing mechanism, a" totalizer, tappets on said totalizer, numeral keys, actuating mechanism for said computing mechanism under the control of said keys, a carriage escapement,- a universal bar actuable by said keys, means to lock said escapement to hold said carriage, means-comprising a member connected with "said universal bar to render the escapement locking means effective, locking-means comprising a pawl to co-o'perate with said member, and means actuable by the tappets on said totalizer to render said pawl effective tohold said universal bar.

23. In a combined typewriting 'and com puting ,machine, the combination of a carriage, numeral'keys, computing mechanism, a power drive under the control of said numeral keys and with which said keys may become connected, means to prevent the simultaneous actuation and connection of two keys with said power drive, and locking means to lock said power drive to prevent the actuation .of any one of said keys at "punctuation positions in the travel of said carriage.

, 24. In a combined typewriting and computing machine, the combination of a carriage, a totalizer to travel with said carriage, numeral keys, computlng mechanism, a power drive for said computing mechanism and under the control of said numeral keys, means associated with said numeral keys to prevent simultaneous actuation of two of said keys, and means to lock said power drive to prevent a computing action and the actuation of any one of said keys at punctuati'on positions in the travel of said totalizer.

25. In a-combined typewriting and computing machine, the combination of a carriage, numeral keys, computing mechanism, a power drive for said computing mechanism, and with which said numeral keys may become connected, and means to prevent the simultaneous connection of two keys with said power drive.

26. In a combined typewriting and computing machine, the combination of a carriage, numeral keys, computing mechanism, means to prevent simultaneous actuation of two keys, normally held power driving means, releasing means for said power driving means under the control of said keys, and means to lock said releasing means, and

7 thereby said keys, to render said power drivkeys, tabulatin ing means ineffective at punctuation positions of said carriage.

27. The combination of a carriage, numeral keys, computing mechanism, a normally held power drive for said computing mechanism, releasing means for said power drive under the control of said numeral mechanism for said carriage, said tabu ating mechanism comprising keys, and means to prevent the release of said power drive by any one of said numeral keys when a tabulator key is active.

28. The combination of a carriage, nu-

- meral keys, computing mechanism, a normally held power drive for said computing mechanism, releasing means for said power drive under the control of said numeral keys, tabulating mechanism for said carriage, said tabulating mechanism comprising keys, and means to prevent the actuation of the tabulator keys while the power drive is active. i

2%). In a'combined typewritingq and computing machine, the combination of numeral keys, computing mechanism, a power drive, releasing means for said power drive actuable by said keys, tabulating mechanism comprising keys, and means to lock said numeral keys to prevent the release of said power drive when a tabulator key is active.

30. The combination of a carriage, a se-.

ries of numeral keys, computing mechanism, a normally held power drive for sald computing mechanism, releasing means for said prising a series of keys, and means common to both series of keys to prevent the actuation ofany one of the keys in one series, when a key of the other series is active.

31. The combination of a carriage, numeral keys, computing, mechanism, a normally held power drive. for said computing mechanism, a release for said power drive under the control of said numeral keys, tabulator keys, a carria e release under the control of said tabulator keys, and means to lock said tabulator keys to prevent the release of said carriage when the power drive is active;

32. The combination of a carriage, numeral keys, computing mechanism, a normally held power drive for said computing mechanism, a release for said power drive under the control of said numeral keys, tabulator keys, a carriage release under the control of said tabulator keys, and means to lock said numeral keys to prevent the release of said power drive while said carriage is released by one of said tabulator keys.

33. The combination of a carriage, numeral keys, computing mechanism, a normally held power drive for said computing mechanism, a release'for said power drive underthe control of said numeral keys, tabulator keys, a carriage release under the control of said tabulator keys, and means to permit the actuation of only one release at a time.

34. The combination of a carriage, numeral keys, computing mechanism, a normally held power drive for said computing mechanism, a release for said power drive under the control of said numeral keys, tabulator keys, a carriage release under the .control of said tabulator keys. and means puting machine, the combination of numeral keys, computing mechanism, apower drive, releasing means for said power drive actuable by said keys, means whereby any one of said keys may be actuated by said power drive after the latter is released, and means to prevent the actuation of another key before the actuated key has become disconnected from said power drive on the return of said key to normal position.

36. The combination of a carriage, type keys, a normally held power drive for said type keys, a release for said power drive under the control of said type keys, a tabulator for said carriage, said tabulator comprising keys, and means to prevent the release of said power drive by any one of said type keys when a tabulator key is active.

37. The combination of a carriage, type keys, a normally held power drive for said type keys, a release for said power drive under the control of said type keys,a tabulator for said carriage, said tabulator comprising keys, and means to prevent the actuation of the tabulator keys while the power drive is active.

38. The combination of a carriage, type keys, a normally heldpower drive for said type keys, a release for said power drive under the control of said type keys, a tabulatorfor said carriage, said tabulator comprising keys, and means common to the type.

keys and the tabulator keys to prevent the actuation of any one of the keys in one series of keys when a key of the other series is active. 7 y

39. The combination of a carriage, printing devices, a normally held power drive ingdevices, a normally held power drive for said printing devices, a. release for said power drive under the control of said printing devices, tabulator keys, a carriage release under the control of said tabulator keys, and means to lock said printing devices to prevent the release of said power drive while said carriage is released by one of said tabulator keys.

- 41. The combination of a carriage, printing devices, a normally held power drive for said printing devices, a release for said powerdrive under the control of said printing devices, tabulator keys, a carriage release under the control of said tabulator keys, and means to permit the actuation of only one release at a time.

42. The combination of printing devices including keys, a power drive, releasing means for said power drive under the con trol of said keys, actuating means to which any one of said keys may be connected, so that it may be actuatedby said power. drive after the latter is released, and means to prevent the actuation of another key before an actuated key has become disconnected from said actuating means.

43. The combination with a carriage, computing mechanism, a plurality of totalizers to travel with said carriage, and a crosstotalizer to travel intermittently with said carriage, of numeral keys, a normally held power drive, releasing means for said power drive, locking means for said numeral keys,

'said locking means being associated withthe power drive releasing means, back-spacing means toreverse saidcarriage, means including a member to render said locking means effective when the carriage is reversed without the aid of the back-spacing means,

a normally ineffective connection from said back-spacing means whereby thecrosstotalizer may be repositioned relatively to the carriage, and nieans controlled by said 7 member to render said connection efi'ective.

44. The combination of a carriage, numeral keys, computing mechanism, a power drive, a universal bar actuable by said keys, locking means for said universal bar, means on said carriage, means actuable by the means on said carriage to render said look ing means effective, a power drive for said computing mechanism, holding means for said power drive, a releasing member for 35 said holding means, said member being connected with said universal bar, and means to render said universal bar ineffective, to release said power drive without affecting the locking means for said universal bar, when it is desired to type numbers without computing them.

45. In combination, a carriage, manually operable printing devices, means to prevent the actuation of more than one of said print- .ing devices at one time, a power .drive,

means whereby the initial movement of any one of said printing devices will render said power drive effective, tabulator keys, a carriage release under the control of said tabulator keys, and means acting. through said preventing means to lock the tabulator keys to prevent the release of the carriage when the power drive is active.

46. In a combined typewriting and computing machine, in combination, a carriage,

a totalizer to travel therewith, numeral keys,

means to lock said keys, comprising an ele:

ment actuable by all of saidkeys and a'latch 'to co-operate with said element and prevent movement thereof, means normallynrging said latch out of effective relation with sa d element, and a connection! actuable by sa d carriage to render said latch effective atvpredetermined positions in the travel of said carriage. '47. In a combined typewriting and computing machine, in combination, a main carriage, asub-carriage to travel intermittently 2 with said main carriage, numeral keys, a numeral-key look, a totalizer on said subcarriage and adjustable therealong, and c0- operating cam-devices on said sub-carriage and said lock to render the latter effective 12{&

when the totalizer is in punctuation posi- 7 tion. F

48. In a combined typewriting and computing machine, in combination, a main carriage, means to determine one or more computing zones therefor, a sub-carriage to travel intermittently with said main carriage while passing through computing zones, ,number-printlng devices effective at a com mon printing point, a totalizer on said subcarriage, number printing device locklng means, and means, includmg cams on said sub-carriage and locking means, whereby the latter will be rendered effective at punctuation positions in the computing zones.

49. Ina combined typewriting and computing machine, in combination, a carriage, numeral keys, computing mechanism, powerdriving means, means including a numeralkey-controlled member for rendering said driving means efi'ective, and means, rendered effective at punctuation positions of the carriage, to lock said member and thereby said keys.

50. In a combined typewriting and computing machine, in combination, a carriage,

numeral keys, computing mechanism, powerdriving means for said computing mechanism, including a numeral-key-controlled member for rendering said driving means effective, tabulating' mechanism for said carriage, including keys for actuating the same, and means whereby a tabulating key, when actuated, will prevent actuation of said numeral-key-controlled member by said numeral keys.

51. In combination, a carriage, numeral keys, computing mechanism, a power-drive for said computing mechanism, means including a numeral-key-controlled member for rendering said drive eifective, tabulating mechanism for said. carriage, comprising keys to actuate the same, and means to prevent actuation of the tabulating keys when the power-drive 1s active.

52. In combination, numeral keys, computing mechanism, a power-drive including a numeral-key-controlled member for rendering said drive effective, tabulatin mechanism comprising keys for actuating t e same, and means to lock said numeral keys to prevent actuation of said member when a tabulating key is active.

53. In combination, a carriage, numeral keys, computing mechanism, a power-drive,

means including a device actuable by said numeral keys for rendering said drive effective, tabulator keys, 'a carriage-release under the control of said tabulating keys, and means to lock said tabulator keys to prevent release of the carriage thereby when the power-drive is active.

54. In combination, a carriage, numeral keys, computing mechanism, a power-drive for said computing mechanism, means including' a numeral-key-controlled member for rendering said drive effective, tabulator keys, a carriage-release under the control of said tabulator keys, and means to lock said numeral keys and thereby prevent actuation of said key-controlled member while the car riage is released by one of the tabulator keys.

55. In combination, a carriage, a set of type-keys, a power-drive for said type-keys, means including a key-controlled member for rendering said power-drive effective, a tabulator for said carriage, including a set of keys for actuating the same, and means. common to the type-keys and the tabulator keys, to prevent the actuation of any one of the keys in one set of keys when a key of the other set is active.

HENRY L. PITMAN.

Witnesses EDITH B. LIBBEY, JENNIE P. THORNE. 

